Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae)
Abstract The release of water from the reservoir hypolimnion, lower concentration of oxygen and the anthropogenic regulation of the river flow, could affect the reproduction of fish, especially migratory species. However, little is known about the effects of these changes in water on non-migratory s...
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| Format: | Article |
| Language: | English |
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Instituto Internacional de Ecologia
2021-06-01
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| Series: | Brazilian Journal of Biology |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100200&tlng=en |
| _version_ | 1818976885976072192 |
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| author | R. Z. Gomes A. L. Paschoalini A. A. Weber K. B. Santiago E. Rizzo N. Bazzoli |
| author_facet | R. Z. Gomes A. L. Paschoalini A. A. Weber K. B. Santiago E. Rizzo N. Bazzoli |
| author_sort | R. Z. Gomes |
| collection | DOAJ |
| description | Abstract The release of water from the reservoir hypolimnion, lower concentration of oxygen and the anthropogenic regulation of the river flow, could affect the reproduction of fish, especially migratory species. However, little is known about the effects of these changes in water on non-migratory species. In this sense, the reproduction of Acestrohynchus lacustris was evaluated in two sections of São Francisco River, Minas Gerais, Brazil. Section 1, located immediately downstream from Três Marias Dam (18°09’31.65”S and 45°13’36.00”W) and section 2, located at the confluence of the São Francisco and the Abaeté Rivers (18°02’47.78”S and 45°10’57.95”W). For this, we obtained the physico-chemical parameters of water of each study section. Additionally, biometric data and biological indices of all specimens were measured. Fecundity and follicles diameters were measured in females. Temperature, dissolved oxygen and flow showed lower values in section 1. Fish captured in this section, had lower values of GSI in both sexes, and females presented decreased values of fecundity and follicles diameter. This species showed reproductive activity in the two sections analyzed, however, in section 1 where the temperature and dissolved oxygen presented significant lower values, the reproductive capacity of A. lacustris, was negatively affected. |
| first_indexed | 2024-12-20T16:18:58Z |
| format | Article |
| id | doaj.art-0e33c5c3308843caaaf9ce5715b90d0b |
| institution | Directory Open Access Journal |
| issn | 1678-4375 |
| language | English |
| last_indexed | 2024-12-20T16:18:58Z |
| publishDate | 2021-06-01 |
| publisher | Instituto Internacional de Ecologia |
| record_format | Article |
| series | Brazilian Journal of Biology |
| spelling | doaj.art-0e33c5c3308843caaaf9ce5715b90d0b2022-12-21T19:33:40ZengInstituto Internacional de EcologiaBrazilian Journal of Biology1678-43752021-06-018210.1590/1519-6984.240894Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae)R. Z. Gomeshttps://orcid.org/0000-0002-0459-5895A. L. Paschoalinihttps://orcid.org/0000-0002-1059-0062A. A. Weberhttps://orcid.org/0000-0003-1999-0780K. B. Santiagohttps://orcid.org/0000-0001-5217-123XE. Rizzohttps://orcid.org/0000-0001-8601-0856N. Bazzolihttps://orcid.org/0000-0003-1562-4927Abstract The release of water from the reservoir hypolimnion, lower concentration of oxygen and the anthropogenic regulation of the river flow, could affect the reproduction of fish, especially migratory species. However, little is known about the effects of these changes in water on non-migratory species. In this sense, the reproduction of Acestrohynchus lacustris was evaluated in two sections of São Francisco River, Minas Gerais, Brazil. Section 1, located immediately downstream from Três Marias Dam (18°09’31.65”S and 45°13’36.00”W) and section 2, located at the confluence of the São Francisco and the Abaeté Rivers (18°02’47.78”S and 45°10’57.95”W). For this, we obtained the physico-chemical parameters of water of each study section. Additionally, biometric data and biological indices of all specimens were measured. Fecundity and follicles diameters were measured in females. Temperature, dissolved oxygen and flow showed lower values in section 1. Fish captured in this section, had lower values of GSI in both sexes, and females presented decreased values of fecundity and follicles diameter. This species showed reproductive activity in the two sections analyzed, however, in section 1 where the temperature and dissolved oxygen presented significant lower values, the reproductive capacity of A. lacustris, was negatively affected.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100200&tlng=enhypolimnionfecunditydogfishneotropical fishTrês Marias Dam |
| spellingShingle | R. Z. Gomes A. L. Paschoalini A. A. Weber K. B. Santiago E. Rizzo N. Bazzoli Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) Brazilian Journal of Biology hypolimnion fecundity dogfish neotropical fish Três Marias Dam |
| title | Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) |
| title_full | Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) |
| title_fullStr | Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) |
| title_full_unstemmed | Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) |
| title_short | Impact of a large dam on reproduction of a non-migratory teleost species, Acestrorhynchus lacustris (Characiformes: Acestrorhynchidae) |
| title_sort | impact of a large dam on reproduction of a non migratory teleost species acestrorhynchus lacustris characiformes acestrorhynchidae |
| topic | hypolimnion fecundity dogfish neotropical fish Três Marias Dam |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-69842022000100200&tlng=en |
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